Two questions:

1) If you want to convert a visa exempt entry to non-imm O do you also need 20 days left on your entry? i had read that it was generally 15 days but perhaps they've changed it.

2) And if you use the monthly income option instead of the Thai bank balance do you have to go back when you have 30 days left on the non imm O or can you get the yearly extension right away? Because the money wouldn't require seasoning in that case